Question

Nicholas bought three business related books. His total bill was $150. If one book cost him 50% more than the other two books combined what was the price of this more expensive book?

Answer 1

150=B1+B2+B3
B3=1.5*(B1+B2)
B1+B2=B3/1.5
150=B3/1.5+B3
225=B3+1.5(B3)
225=2.5(B3)
B3=90

The more expensive book cost $90.